相关疑难解决方法(0)

man su 说：

You can use the -- argument to separate su options from the arguments
supplied to the shell.

man bash 说：

--        A  --  signals  the  end of options and disables further option
          processing.  Any arguments after the -- are treated as filenames
          and arguments.  An argument of - is equivalent to --.

那么，让我们看看：

[root ~] su - yuri -c 'echo "$*"' -- 1 2 3
2 3
[root ~] su - yuri -c 'echo "$*"' -- -- …